Road-form connection



July l0, 1928.

E. G. CARR Y' ROAD Foam coNNEcTlNf Filed Aug. 51. 1922' 2 Sheets-Sheet www JNVENTOR:

BY M/ M uhu ATTORNEYS'.

2 Sheets-Sheet 2 ffm q m E. G. CARR ROAD FORM CONNECTION Filed Aug. 31; 1922 July 1o, 192s;

INVENTOR.'

ATToRA/.EYJq

bottom 19 inclined inopposite directions at 2Q and 21. A` wedge 22 coacts with the incline 2O and the road-form 1, and a wedge 23' coacts with the incline 21 and the vroadiorm 2. The wedges 22 and 23 should not i extend beyond the ends of their respective road-forms because they are intended to coact separately withtheir respective road-v torms in case the bases 3 are not in the same plane.

The operation of the connection, and its principle of operation, will be yreadily understood. The top 8 of the aligning member 7 is ya straight-edge for truing the treads of the roadiiorms, and positioning is effected by the wedge member 10 or the two wedges 22 and 23. It will be noticed that the construction illustrated by Figs. 4 and of the drawings provides in effect an arced contactbetween the aligning member 7 and the wedges 22 and 23, though there are'two points, or places, ofl contact, and the arc is concave upwardly.V l

It will be noticed that the bearings let and of the wedge member 10 constitute in function and' effect a plurality of wedges or wedge members though they are parts of the integral member 10.

rl/Vhat is claimed is:

1. The combination with abutting roadjforms, including basesr and treads, of' a straight aligning member adapted to engage with the treads, and means to force the treads and the aligning member into con-A tact by pressure exerted on each base independently of the planes in which the two bases may lie.

2. The combination with abutting roadf'orms, of a straight aligning member', and wedging means to force the tread of each road-form vinto contact with the aligning member regardless of the alignment of the i bases of the abutting roadeforms.

3. The combination with abutting roadforms, of a straight aligning member, and a wedge member provided with parts adapted to seat separately against the bases of the abutting road-forms, the bottom of the aligning member being non-parallel with its top.

4:. The combination with abutting roadorms, of an aligning member,` and a wedge member having separated bearings on its bottom.

'5. The combination with abutting roadforms, of an aligning member having a straight top and a bottom inclined with respect to the top', and a wedge member having separated bearings on its bottom and an arc-shaped top. y

G. The combination with' abutting roadf forms, of an aligning member having a straight top and a bottom inclined with respect to the top,y and a wedgey member oi inverted Ueshape in cross section which is arovided in its top with a longitudinal groove, the bottom of which is formed to an are, the bottom of the wedge member being provided with bearings adjacent its ends and lower than the intermediatefpart of' the bottom. n 1

7. The combination with two abutting concrete form rails each having a web, an upper flange with a depending` lip', and a lower flange with an upturned lip, of expansible means within the end portions of the rails including a head piece to bear upwardly against the upperflanges` of the rails between the webs and dependingli ps, and a base to bear downwardly on the lower flanges ot the rails between thewebs and upturned lips.

8. The combination with two abutting concrete form rails each having a web, an upper flange with a depending lip, and a lower flange with an upturned lip, of eXpansible means within the end portions of the rails including a. head piece to bear upwardly against the upper flanges of the rails between the webs and depending lips'and to engage said lips,r and a base to bear downwardly on the lower flanges of' the rails between the webs and upturned lips and to engage said upturned lips, said head piece and base rbeing slidable longitudinally of said flanges between said webs and lips so as to permit the rails and said head piece and base to be moved together and separated longitudinally of' the rails.

9. The combination with two abutting` `concrete form rails each having a web, an upper flange with a depending lip, and a lower flange, of a head piece to bear upwardly against the upper flanges of the rails between the webs and lips, and independently operable clamping means between said member and the lower flanges.

In witness whereof I hereto affix my signature. y

EDVARD G. CARR. 

